code: def test_constructor_sliced_column_slices(df2):
      # Note loc doesn't use _constructor_sliced so it's not tested here
      geo_idx = df2.columns.get_loc("geometry")
      sub = df2.head(1)
      # column slices should be GeoSeries if of geometry type
      assert type(sub.iloc[:, geo_idx]) == GeoSeries
      assert type(sub.iloc[[0], geo_idx]) == GeoSeries
      sub = df2.head(2)
      assert type(sub.iloc[:, geo_idx]) == GeoSeries
      assert type(sub.iloc[[0, 1], geo_idx]) == GeoSeries
  
      # check iloc row slices are pd.Series instead
      assert type(df2.iloc[0, :]) == pd.Series
  
imports: import pandas
  import pyproj
  import pytest
  from shapely.geometry import Point
  import numpy
  from geopandas import GeoDataFrame, GeoSeries
  from geopandas.testing import assert_geodataframe_equal
label_desc: Use image node_id 20 for calling a global function with example usage: test_constructor_sliced_column_slices(df2) without return types